AT28HC256-90TC

Product Overview

Category

AT28HC256-90TC belongs to the category of high-speed, low-power Electrically Erasable Programmable Read-Only Memory (EEPROM) chips.

Use

This product is primarily used for non-volatile data storage in various electronic devices such as microcontrollers, computers, and consumer electronics.

Characteristics

• High-speed operation
• Low power consumption
• Non-volatile memory
• Large storage capacity
• Reliable data retention
• Easy to interface with other electronic components

Package

AT28HC256-90TC is available in a Thin Small Outline Package (TSOP), which ensures efficient heat dissipation and compact integration into electronic circuits.

Essence

The essence of AT28HC256-90TC lies in its ability to provide reliable and high-speed data storage in a compact and low-power package.

Packaging/Quantity

AT28HC256-90TC is typically packaged in reels or tubes, containing a specific quantity of chips per package. The exact packaging and quantity may vary depending on the manufacturer's specifications.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 90 nanoseconds
• Interface: Serial Peripheral Interface (SPI)
• Data Retention: Up to 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT28HC256-90TC chip has a total of 28 pins, each serving a specific purpose. The pin configuration is as follows:

1. Chip Enable (CE)
2. Output Enable (OE)
3. Write Enable (WE)
4. Address Inputs (A0-A14)
5. Data Inputs/Outputs (DQ0-DQ7)
6. Supply Voltage (VCC)
7. Ground (GND)

Functional Features

• High-speed read and write operations
• Byte-level random access
• Hardware and software write protection
• Automatic page write and erase capability
• Low-power standby mode
• Software-controlled data protection

Advantages

• Fast access time allows for efficient data retrieval and storage.
• Low power consumption ensures extended battery life in portable devices.
• Non-volatile memory retains data even when power is disconnected.
• Large storage capacity accommodates a wide range of applications.
• Easy integration with other electronic components simplifies circuit design.

Disadvantages

• Limited endurance compared to other non-volatile memory technologies.
• Relatively higher cost per bit compared to some alternative memory solutions.
• Requires careful handling and storage to prevent damage from electrostatic discharge.

Working Principles

AT28HC256-90TC utilizes EEPROM technology, which allows for electrically erasing and reprogramming data. The chip stores data in a grid of memory cells, each consisting of a floating-gate transistor. When programming, electrons are trapped in the floating gate, altering the cell's threshold voltage. This change determines whether the cell represents a "0" or "1" bit. Reading involves applying a voltage to the cell and measuring the resulting current flow.

Detailed Application Field Plans

AT28HC256-90TC finds application in various fields, including: - Embedded systems - Automotive electronics - Industrial control systems - Medical devices - Communication equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AT28HC256-90TC include: - AT29C256-90PC - 25LC256-I/SN - M93C86-WMN6TP

These alternatives provide comparable storage capacity, access times, and interface compatibility, allowing users to choose the most suitable option for their specific requirements.

In conclusion, AT28HC256-90TC is a high-speed, low-power EEPROM chip that offers reliable non-volatile data storage. Its compact package, large storage capacity, and easy integration make it suitable for various electronic applications. However, users should consider the limited endurance and higher cost per bit compared to alternative memory solutions.